Final answer:
When two vehicles meet on a steep mountain road where neither can pass, the vehicle traveling uphill has the right-of-way to ensure safety and prevent accidents. The vehicle traveling uphill is granted the right-of-way because it would be more difficult for that vehicle to stop or reverse on the incline.
Step-by-step explanation:
In this situation, the vehicle traveling uphill has the right-of-way. When two vehicles meet on a steep mountain road where neither can pass, the vehicle traveling uphill has the advantage because it would be more difficult for that vehicle to stop or reverse on the incline.
For example, if the vehicle traveling downhill were to yield to the vehicle traveling uphill, the vehicle traveling downhill would then have to stop or reverse uphill, which would be risky and potentially dangerous.
Therefore, the vehicle traveling uphill is granted the right-of-way to ensure safety and prevent accidents on steep mountain roads where passing is not possible.